package interview.sync.array;/*

 */

import javax.xml.transform.Source;
import java.util.Random;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;

/**
 * @ClassName SemaphoreDemo
 * @Author Final
 * @Project DataStructures
 */
public class SemaphoreDemo {

    public static void main(String[] args) {
        Semaphore semaphore=new Semaphore(3);

        for (int i=1;i<=6;i++){
            new Thread(()->{
                try {
                    semaphore.acquire();
                    System.out.println(Thread.currentThread().getName()+"---------------抢到了车位");

                    TimeUnit.SECONDS.sleep(new Random().nextInt(5));

                    System.out.println(Thread.currentThread().getName()+"---------------离开了车位");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }finally {
                    semaphore.release();
                }
            },String.valueOf(i)).start();
        }
    }
}
